import { login, logout, getInfo } from '@/api/user'
import { getToken, setToken, removeToken } from '@/utils/auth'
import router, { resetRouter } from '@/router'
import request from '@/utils/request'

const state = {
	token: getToken(),
	name: '',
	avatar: '',
	introduction: '',
	roles: [],
}

const mutations = {
	SET_TOKEN: (state, token) => {
		state.token = token
	},
	SET_INTRODUCTION: (state, introduction) => {
		state.introduction = introduction
	},
	SET_NAME: (state, name) => {
		state.name = name
	},
	SET_AVATAR: (state, avatar) => {
		state.avatar = avatar
	},
	SET_ROLES: (state, roles) => {
		state.roles = roles
	},
}

const actions = {
	// user login
	login({ commit }, userInfo) {
		// const { username, password } = userInfo
		return new Promise((resolve, reject) => {
			login(userInfo)
				.then(res => {
					commit('SET_TOKEN', res.access_token)
					setToken(res.access_token)
					resolve(res)
				})
				.catch(error => {
					reject(error)
				})
		})
	},

	// get user info
	getInfo({ commit, state }) {
		return new Promise((resolve, reject) => {
			getInfo()
				.then(response => {
					const { userId } = response

					if (!response) {
						reject('验证失败，请重新登录')
					}

					request({
						url: '/users/' + userId,
						methods: 'get',
					}).then(res => {
						const { roles, username, status } = res

						// roles must be a non-empty array
						if (!status || !roles || roles.length <= 0) {
							reject('您的账户已停用，请联系管理员')
						}

						commit('SET_ROLES', roles)
						commit('SET_NAME', username)
						resolve(res)
					})
				})
				.catch(error => {
					reject(error)
				})
		})
	},

	// user logout
	logout({ commit, state, dispatch }) {
		return new Promise((resolve, reject) => {
			logout(state.token)
				.then(() => {
					commit('SET_TOKEN', '')
					commit('SET_ROLES', [])
					removeToken()
					resetRouter()

					// reset visited views and cached views
					// to fixed https://github.com/PanJiaChen/vue-element-admin/issues/2485
					dispatch('tagsView/delAllViews', null, { root: true })

					resolve()
				})
				.catch(error => {
					reject(error)
				})
		})
	},

	// remove token
	resetToken({ commit }) {
		return new Promise(resolve => {
			commit('SET_TOKEN', '')
			commit('SET_ROLES', [])
			removeToken()
			resolve()
		})
	},

	// dynamically modify permissions
	async changeRoles({ commit, dispatch }, role) {
		const token = role + '-token'

		commit('SET_TOKEN', token)
		setToken(token)

		const { roles } = await dispatch('getInfo')

		resetRouter()

		// generate accessible routes map based on roles
		const accessRoutes = await dispatch('permission/generateRoutes', roles, {
			root: true,
		})
		// dynamically add accessible routes
		router.addRoutes(accessRoutes)

		// reset visited views and cached views
		dispatch('tagsView/delAllViews', null, { root: true })
	},
}

export default {
	namespaced: true,
	state,
	mutations,
	actions,
}
